What is the current water temperature in Fukuoka?

As of now, in Fukuoka, the water temperature is 27.25°C. It's safe to say that the water is comfortably warm for various water-related activities.

Japan > Fukuoka

Water temperature in Fukuoka

Detailed information about the current water temperature in Fukuoka. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

81.1

°F

September 11, 13:20

Trend:

increasing

Yesterday:

81.0°F

Tomorrow:

81.2°F

Sunrise:

05:58

Sunset:

18:31

Day Length:

12 h. 33 min.

Fukuoka in September

Minimum:

56.7°F

Average:

58.8°F

Maximum:

61.0°F

Sea water temperature in Fukuoka today

As of now, in Fukuoka, the water temperature is 81.1°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.3°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 84.4°F on 2025, while the historical minimum was 78.4°F on 2016.

latest data

last year

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the maximum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 80.7°F, the minimum temperature may reach 80.1°F, and the maximum might stay at 81.2°F.

Daily water temperature in Fukuoka

Date	Current Year actual* / forecast**	last year	10 years average
Aug 28	85.8°F	85.9°F	83.2°F
Aug 29	85.5°F	84.8°F	82.8°F
Aug 30	85.0°F	85.9°F	82.9°F
Aug 31	84.7°F	85.7°F	82.7°F
Sep 1	84.3°F	85.9°F	82.3°F
Sep 2	84.3°F	85.3°F	81.9°F
Sep 3	84.8°F	84.4°F	81.7°F
Sep 4	84.4°F	85.4°F	81.5°F
Sep 5	84.1°F	84.7°F	81.4°F
Sep 6	83.5°F	84.0°F	81.2°F
Sep 7	82.7°F	85.7°F	81.0°F
Sep 8	82.2°F	85.5°F	80.8°F
Sep 9	81.6°F	85.3°F	80.6°F
Sep 10	81.0°F	84.7°F	80.7°F
Sep 11	81.1°F	84.4°F	80.8°F
Sep 12	81.2°F	84.0°F	80.9°F
Sep 13	81.1°F	83.8°F	80.8°F
Sep 14	81.0°F	83.4°F	80.7°F
Sep 15	80.5°F	83.0°F	80.3°F
Sep 16	80.5°F	83.7°F	80.2°F
Sep 17	80.5°F	85.7°F	80.2°F
Sep 18	80.1°F	85.0°F	79.8°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Fukuoka by month

In Fukuoka, the months July through October offer comfortable swimming conditions, which amounts to 112 swimming days.

The warmest water in Fukuoka was recorded on July 28, 2026, reaching a 88.4°F. While the coldest temperature occurred on March 10, 2025, dipping to 51.7°F. The average readings by season are 58.5°F in Winter, 60.3°F in Spring, 78.0°F in Summer, and 73.5°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kitakyushu	83.2°F	30mi
Shimonoseki	82.8°F	39mi
Kumamoto	82.1°F	57mi
Nagasaki	81.9°F	66mi

* current water temperature in this city

** straight line distance from Fukuoka